Nokia Nokia Certifications 4A0-105 Questions & Answers

• Question 131:

  In Rapid Spanning Tree Protocol, a Backup Port is on the same switch as a Designated Port?

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 132:

  Click on the exhibit below.

  

  Based on the output below which of the following statements is true?

  A. This Bridge is furthest from the Root Bridge within the VPLS mesh.

  B. This Bridge is the Root Bridge.

  C. SAP 1/1/1 is an Edge Port.

  D. This Bridge is closest to the Root Bridge within the VPLS mesh.

  Correct Answer: D

• Question 133:

  Click on the exhibit below.

  

  Which bridge will become the root bridge?

  A. Bridge B

  B. Bridge C

  C. Bridge D

  D. Bridge E

  Correct Answer: D

• Question 134:

  Which of the following statements about Spanning Tree Protocol is true?

  A. For the switches that are non-root or designated switches, the port with the highest combined cost to the root is the root port.

  B. In the case where two switches have the same priority, the switch with the lowest MAC address becomes the root.

  C. The switch port that is the greatest distance from the LAN to the root is the designated port.

  D. All of the above.

  Correct Answer: B

• Question 135:

  When spanning tree is enabled within a VPLS service and the STP mode is 802.1 D 2004 what happens if a PVST BPDU is received on a SAP?

  A. Spanning tree will be disabled on the SAP that the PVST BPDU was received on.

  B. The SAP that the PVST BPDU was received on will be disabled to prevent loops.

  C. The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU was received on.

  D. The PVST BPDU will be ignored and 802.1D 2004 BPDUs will continue to be transmitted on the SAP.

  Correct Answer: C

• Question 136:

  How is the Primary Bridge chosen in a VPLS?

  A. The PE devices participating in the VPLS mesh run a separate Spanning Tree instance in the Core. The Primary Bridge is the Root Bridge for the VPLS mesh.

  B. The PE devices participating in the VPLS mesh determine which bridge is closest to Root Bridge. This bridge becomes the Primary Bridge.

  C. The PE devices participating in the VPLS mesh determine which bridge has the lowest bridge-id. This bridge becomes the Primary Bridge.

  D. The PE devices participating in the VPLS mesh determine which bridge is the Root Bridge. This becomes the Primary Bridge.

  Correct Answer: B

• Question 137:

  Which of the following statements is true?

  A. Filter Policies can only be applied on egress.

  B. An IP filter can be applied on ingress at the same time a MAC filter is applied on the egress of the SAP.

  C. Filter Policies can be based on IP, MAC, and VPI/VCI addresses.

  D. Any number of ingress and egress filter policies can be associated with a SAP.

  E. An IP filter and a MAC filter can be applied on the ingress SAP at the same time.

  F. None of the above.

  Correct Answer: B

• Question 138:

  Click on the exhibit below.

  

  The following IP filter has been configured and applied to a SAP in a non-VPLS service. Which of the following statements is true?

  A. An error will be generated and the configuration will not be allowed.

  B. The filter entry will be ignored and traffic matching the criteria will be forwarded

  C. All traffic matching entry 20 will be dropped.

  D. Traffic matching entry 20 will be forwarded to sdp 100:1.

  Correct Answer: C

• Question 139:

  During the process of troubleshooting a VPLS problem the "oam mac-purge" command with "register" option was used to purge a MAC address from the FDB.

  Which of the following statements is true?

  A. Relearning of the MAC address that was purged can only be done once customer traffic resumes.

  B. Relearning of the MAC address that was purged can only be done with the "oam mac- populate" command.

  C. Customer traffic destined to the MAC address that was purged will be dropped until the MAC address is relearned with the "oam mac-populate" command.

  D. Relearning of the MAC address that was purged can only be done with the "oam mac- register" command.

  Correct Answer: B

• Question 140:

  Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a SAP within a VPLS service?

  A. oam mac-populate

  B. oam mac-ping

  C. oam mac-trace

  D. oam svc-ping

  E. oam cpe-ping

  Correct Answer: E